I'm using wx to make a GUI for running another program. I have two Notebook tabs: the first for the input and the second for the output of my program. I would like to set it up such that the user will indicate a directory for the program output in the InputPanel, and the ComboBox in the OutputPanel will update with the contents of this directory. A stripped down version of my code looks like:
#!/usr/bin/python
import glob
import wx
class InputPanel(wx.Panel):
dirF = 0
def __init__(self, parent):
wx.Panel.__init__(self, parent=parent, id=wx.ID_ANY)
self.dirFileText = wx.StaticText(self, label="Output Directory:")
self.dirFile = wx.TextCtrl(self, value="fuda", style = wx.TE_PROCESS_ENTER)
self.Bind(wx.EVT_TEXT, self.EvtText, self.dirFile)
sizer = wx.BoxSizer(wx.HORIZONTAL)
sizer.Add(self.dirFileText, 0, wx.ALL, 2)
sizer.Add(self.dirFile, 0, wx.ALL|wx.EXPAND,2)
self.SetSizer(sizer)
sizer.Fit(self)
def EvtText(self, event):
event.GetString()
InputPanel.dirF = self.dirFile.GetValue()
class OutputPanel(wx.Panel):
def __init__(self, parent):
wx.Panel.__init__(self, parent=parent, id=wx.ID_ANY)
self.dirText = wx.StaticText(self, label="Choice?")
self.dirT = wx.ComboBox(self, choices='', style=wx.CB_READONLY)
self.dirT.SetItems(glob.glob("%s/*.dat" % (InputPanel.dirF)))
self.Bind(wx.EVT_COMBOBOX, self.onSelect, self.dirT)
sizer = wx.BoxSizer(wx.HORIZONTAL)
sizer.Add(self.dirText, 0, wx.ALL, 2)
sizer.Add(self.dirT, 0, wx.ALL|wx.EXPAND, 2)
self.SetSizer(sizer)
sizer.Fit(self)
def onSelect(self, event):
event.GetSelection()
class Notebook(wx.Notebook):
def __init__(self, parent):
wx.Notebook.__init__(self, parent, id=wx.ID_ANY, style=wx.BK_DEFAULT)
tabOne = InputPanel(self)
self.AddPage(tabOne, "Input")
tabTwo = OutputPanel(self)
self.AddPage(tabTwo, "Output")
self.Bind(wx.EVT_NOTEBOOK_PAGE_CHANGED, self.onPageChanged)
self.Bind(wx.EVT_NOTEBOOK_PAGE_CHANGING, self.onPageChanging)
def onPageChanged(self, event):
event.Skip()
def onPageChanging(self, event):
event.Skip()
class MainWindow(wx.Frame):
def __init__(self):
wx.Frame.__init__(self, None, wx.ID_ANY, "nmrPipeFit", size=(600,400))
panel = wx.Panel(self)
# Setting up the menu
filemenu = wx.Menu()
menuExit = filemenu.Append(wx.ID_EXIT, "E&xit", "Exit the program")
menubar = wx.MenuBar() # Create the menubar
menubar.Append(filemenu, "&File") # Add file menu to menubar
self.SetMenuBar(menubar) # Add menubar to frame
# Set menu events
self.Bind(wx.EVT_MENU, self.OnExit, menuExit)
notebook = Notebook(panel)
sizer = wx.BoxSizer(wx.VERTICAL)
sizer.Add(notebook, 1, wx.ALL|wx.EXPAND, 5)
panel.SetSizer(sizer)
sizer.Fit(self)
self.Layout()
self.Show()
def OnExit(self, event):
self.Close(True) # Close the frame
if __name__== "__main__":
app=wx.PySimpleApp()
frame = MainWindow()
app.MainLoop()
I have tried several different things to get the list of choices for the combobox to update with a change in the directory from the InputPanel, but with no luck. Any help will be greatly appreciated.
Thanks, in advance, Michael Latham
Well, there's an ugly hack way to do it and the elegant way to do it. Actually, there are probably several hacks. Let's look at one of the most common:
In the notebook's page changing event, you can tell the output panel to do something like this: inputPanelRef.dirFile.GetValue() and then update the comboboxe's entries as needed. You'll probably need to do that from the Notebook widget.
The way I prefer to pass info between panels is to use Pubsub. There's a good example here: http://www.blog.pythonlibrary.org/2010/06/27/wxpython-and-pubsub-a-simple-tutorial/